Get tapes of wounded prey animals. They're effective for most predators though, so double check before taking a shot.
I've seen foxes, wolves, coyotes, mountain lion, bobcat, bear and all sorts of raptors called using taped wounded prey. My dad was a USDA Forest Service biologist, so I got to go on all kinds of adventures when I was a little kid.
"'Did you ever wonder why we had to run for shelter when the promise of a brave new world unfurled beneath a clear blue sky? "